I logged in this morning to work on my site and found a large white strip running down the left side of my site. Yesterday when I logged off, there were no issues but it has appeared randomly today. It also appears on my other pages and in all of the previous versions. I have tried deleted each section one at a time to see where the problem is coming from but the white space still remains.
Any advice would be great as this has appeared on its own without me changing any settings.